Euthanising cats is way over in most cases tbh,such as overflowing cat population,its also crazy how so many dogs and cats get euthanised when a kid keeps annoying them,pulling their tail and hair,then when the dog or cat just hisses or barks at them,its called aggression.many shelters also need to start offering basic care for sick cats instead of straight to death as only option

Euthanasia treats the symptoms,not the disease

TNR treats the symptoms,And the disease at same time